Abbas, Youssef Wali, Fedaa Aeyyd Nayyef, and Waggas Galib Atshan. “New Results on Fourth-Hankel Determinant of a Certain Subclass of Analytic Functions”. Journal of natural and applied sciences 1, no. 10 (January 22, 2026): 226–239. Accessed July 1, 2026. https://uraljournal.remahcenter.com/papers/index.php/ural/article/view/26.